| Date | Tournament | State | Round | John Barker | Daniel Piechnick |
|---|---|---|---|---|---|
| 20/06/1994 | South Australian Championships | SA | 4 | 492 | 344 |
| 14/05/1995 | South Australian Championships | SA | 7 | 378 | 294 |
| 14/05/1995 | South Australian Championships | SA | 12 | 346 | 348 |
| 31/03/1997 | Australian Scrabble Championship | SA | 2 | 384 | 460 |
| 01/08/1999 | Winter Masters | NSW | 8 | 426 | 443 |
| 22/04/2000 | Australian Championships | QLD | 7 | 441 | 402 |
| 12/06/2000 | Victorian Championships | VIC | 21 | 332 | 479 |
| 28/10/2012 | October Pub Tourney | SA | 5 | 281 | 505 |
| 22/04/2019 | 2019 Australian Championship | TAS | 2 | 230 | 564 |
| Head-to-head after 9 games | 3 | 6 | |||
| Average score | 367.78 | 426.56 | |||
| Spread | -529 | 529 | |||